<template>
    <view class="uni-steps">
        <view :class="[direction==='column'?'uni-steps__column':'uni-steps__row']">
            <view :class="[direction==='column'?'uni-steps__column-text-container':'uni-steps__row-text-container']">
                <view v-for="(item,index) in options" :key="index"
                      :class="[direction==='column'?'uni-steps__column-text':'uni-steps__row-text']">
                    <text :style="{color:index === active?activeColor:deactiveColor}"
                          :class="[direction==='column'?'uni-steps__column-title':'uni-steps__row-title']">
                        {{item.title}}
                    </text>
                    <text :style="{color: deactiveColor}"
                          :class="[direction==='column'?'uni-steps__column-desc':'uni-steps__row-desc']">{{item.desc}}
                    </text>
                </view>
            </view>
            <view :class="[direction==='column'?'uni-steps__column-container':'uni-steps__row-container']">
                <view :class="[direction==='column'?'uni-steps__column-line-item':'uni-steps__row-line-item']"
                      v-for="(item,index) in options" :key="index">
                    <view
                            :class="[direction==='column'?'uni-steps__column-line':'uni-steps__row-line',direction==='column'?'uni-steps__column-line--before':'uni-steps__row-line--before']"
                            :style="{backgroundColor:index<=active&&index!==0?activeColor:index===0?'transparent':deactiveColor}">
                    </view>
                    <view :class="[direction==='column'?'uni-steps__column-check':'uni-steps__row-check']"
                          v-if="index === active">
                        <uni-icons :color="activeColor" :type="activeIcon" size="14"></uni-icons>
                    </view>
                    <view v-else :class="[direction==='column'?'uni-steps__column-circle':'uni-steps__row-circle']"
                          :style="{backgroundColor:index<active?activeColor:deactiveColor}"></view>
                    <view
                            :class="[direction==='column'?'uni-steps__column-line':'uni-steps__row-line',direction==='column'?'uni-steps__column-line--after':'uni-steps__row-line--after']"
                            :style="{backgroundColor:index<active&&index!==options.length-1?activeColor:index===options.length-1?'transparent':deactiveColor}">
                    </view>
                </view>
            </view>
        </view>
    </view>
</template>

<script>
    /**
     * Steps 步骤条
     * @description 评分组件
     * @tutorial https://ext.dcloud.net.cn/plugin?id=34
     * @property {Number} active 当前步骤
     * @property {String} direction = [row|column] 当前步骤
     *    @value row 横向
     *    @value column 纵向
     * @property {String} activeColor 选中状态的颜色
     * @property {Array} options 数据源，格式为：[{title:'xxx',desc:'xxx'},{title:'xxx',desc:'xxx'}]
     */

    export default {
        name: 'UniSteps',
        props: {
            direction: {
                // 排列方向 row column
                type: String,
                default: 'row'
            },
            activeColor: {
                // 激活状态颜色
                type: String,
                default: '#2979FF'
            },
            deactiveColor: {
                // 未激活状态颜色
                type: String,
                default: '#B7BDC6'
            },
            active: {
                // 当前步骤
                type: Number,
                default: 0
            },
            activeIcon: {
                // 当前步骤
                type: String,
                default: 'checkbox-filled'
            },
            options: {
                type: Array,
                default() {
                    return []
                }
            } // 数据
        },
        data() {
            return {}
        }
    }
</script>

<style lang="scss">
    $uni-primary: #2979ff !default;
    $uni-border-color: #EDEDED;
    .uni-steps {
        /* #ifndef APP-NVUE */
        display: flex;
        width: 100%;
        /* #endif */
        /* #ifdef APP-NVUE */
        flex: 1;
        /* #endif */
        flex-direction: column;
    }

    .uni-steps__row {
        /* #ifndef APP-NVUE */
        display: flex;
        /* #endif */
        flex-direction: column;
    }

    .uni-steps__column {
        /* #ifndef APP-NVUE */
        display: flex;
        /* #endif */
        flex-direction: row-reverse;
    }

    .uni-steps__row-text-container {
        /* #ifndef APP-NVUE */
        display: flex;
        /* #endif */
        flex-direction: row;
        align-items: flex-end;
        margin-bottom: 8px;
    }

    .uni-steps__column-text-container {
        /* #ifndef APP-NVUE */
        display: flex;
        /* #endif */
        flex-direction: column;
        flex: 1;
    }

    .uni-steps__row-text {
        /* #ifndef APP-NVUE */
        display: inline-flex;
        /* #endif */
        flex: 1;
        flex-direction: column;
    }

    .uni-steps__column-text {
        padding: 6px 0px;
        border-bottom-style: solid;
        border-bottom-width: 1px;
        border-bottom-color: $uni-border-color;
        /* #ifndef APP-NVUE */
        display: flex;
        /* #endif */
        flex-direction: column;
    }

    .uni-steps__row-title {
        font-size: 14px;
        line-height: 16px;
        text-align: center;
    }

    .uni-steps__column-title {
        font-size: 14px;
        text-align: left;
        line-height: 18px;
    }

    .uni-steps__row-desc {
        font-size: 12px;
        line-height: 14px;
        text-align: center;
    }

    .uni-steps__column-desc {
        font-size: 12px;
        text-align: left;
        line-height: 18px;
    }

    .uni-steps__row-container {
        /* #ifndef APP-NVUE */
        display: flex;
        /* #endif */
        flex-direction: row;
    }

    .uni-steps__column-container {
        /* #ifndef APP-NVUE */
        display: inline-flex;
        /* #endif */
        width: 30px;
        flex-direction: column;
    }

    .uni-steps__row-line-item {
        /* #ifndef APP-NVUE */
        display: inline-flex;
        /* #endif */
        flex-direction: row;
        flex: 1;
        height: 14px;
        line-height: 14px;
        align-items: center;
        justify-content: center;
    }

    .uni-steps__column-line-item {
        /* #ifndef APP-NVUE */
        display: flex;
        /* #endif */
        flex-direction: column;
        flex: 1;
        align-items: center;
        justify-content: center;
    }

    .uni-steps__row-line {
        flex: 1;
        height: 1px;
        background-color: #B7BDC6;
    }

    .uni-steps__column-line {
        width: 1px;
        background-color: #B7BDC6;
    }

    .uni-steps__row-line--after {
        transform: translateX(1px);
    }

    .uni-steps__column-line--after {
        flex: 1;
        transform: translate(0px, 1px);
    }

    .uni-steps__row-line--before {
        transform: translateX(-1px);
    }

    .uni-steps__column-line--before {
        height: 6px;
        transform: translate(0px, -13px);
    }

    .uni-steps__row-circle {
        width: 5px;
        height: 5px;
        border-radius: 50%;
        background-color: #B7BDC6;
        margin: 0px 3px;
    }

    .uni-steps__column-circle {
        width: 5px;
        height: 5px;
        border-radius: 50%;
        background-color: #B7BDC6;
        margin: 4px 0px 5px 0px;
    }

    .uni-steps__row-check {
        margin: 0px 6px;
    }

    .uni-steps__column-check {
        height: 14px;
        line-height: 14px;
        margin: 2px 0px;
    }
</style>
